<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title></title>
		<link rel="stylesheet" href="css/bootstrap.css">
		<meta name="viewport" content="width=device-width,initial-scale=1,minimum-scale=1,maximum-scale=1,user-scalable=no" />
	</head>
	<body>
		<div class="container">
			<div class="row">
				<!-- order列排序 -->
				<div class="col border py-5 bg-warning">col</div>
				<div class="col border py-5 bg-warning order-12">order-12</div>
				<div class="col border py-5 bg-warning order-1">order-1</div>
				<div class="col border py-5 bg-warning order-5">order-5</div>
			</div>
			<div class="row">
				<!-- order-first的权重要高于order-1 -->
				<div class="col border py-5 bg-info">col</div>
				<div class="col border py-5 bg-info order-last">last</div>
				<div class="col border py-5 bg-info order-first">first</div>
				<div class="col border py-5 bg-info order-5">order-5</div>
			</div>
		</div>

		
	</body>
</html>
